Moisture-proof telephone set.



U. E. HAGUE. I I MOISTURE moor TELEPHONE SET.

APPLICATION FILED MAY 26, 1910.

5 ,1 Patented Aug. 25, 191

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wiInesses InvEnimr c. B HAGUE. MOISTURE PROOF TELEPHONE SET.

APPLICATION FILED MAY 25, 1910.

Patented Aug. 25, 1914.

w *i 6 1 18 %I Ila/111155555 Inventor p Y To-aZl whom it may concern K CHARLES E. HAGUE, OF ROCHESTER,

NEW YORK, ASSIG-NOR TO STROMBERG-CARLSON TELEPHONE MANUFACTURING COMPANY, OF ROCHESTER, NEW YORK, A CORPORA- TION or NEW YORK MOISTURE-PROOF TELEPHONE SET.

Specification of Letters Patent.

Patented Aug. 25, 1914.

Application filed May 25, 1910. Serial No. 563,260.

Be it known that I, CHARLES E. HAGUE, a

I citizen of the United States, residing in Rochester, county of -Monroe, and State of New York, have invented certain new and useful Improvements in Moisture-Proof T lepho-ne Sets, of which the following is a specification.

3 section through Fig. l

My invention relates to water-proof telephone sets of the character adapted for use in-Inines or other places where the apparatus must necessarily be protected from moisture and from gases which would cause corrosion if allowed to come in contact with the interior parts of the telephone sets.

A particular feature of my invention is v the means by which I operate the tapper for sounding the call-bells, these being necessarily more or less exposed to the dampness and gases, and at the same time maintain the electron1agnet entirely inclosed within the gas-proof chamber of my telephone set.

My invention is illustrated in the accompanying drawing in 'xvhich- Figure 1 is a front view partially broken away with the door open, and Fig. 2 is a with the door closed. The illustrated embodiment-of my invention comprises a cast-iron box portion 1,hav-' ing an open front into which the inner door 2 is fitted, this door being held tightly against the sealing ring 3 by means of screws 4 so that no moisture or gases may pass the inner door and enter the inner chamber. The outer door 5 is hinged to the main casing 1 and is provided with a rubber or other sealing cushion -6, which, when the door is closed, prevents moisture and gases from entering the space between 'the outer and inner doors. The cap 8 forms a cover. and

partial protection for the bells and the movmg mechanism for sounding. the gongs,. this cap having the opening-9 at the front'and sides to permit the sound to emanate freely in all directions.

The exterior circuit wires are brought to the telephone through water-proof conduit, this conduit terminating inthe connection box llwhichis adapted to be tightly secured against the lower surface of the main inclosing cases'o that the connection terminals 12, 13 and 14a'rje completely protected from moisture and gas.

The polarized ringer, the working parts to use the telephone.-

of which are exposed more orless to gases the-upper ends are turned back and rest against the lower face of the non-magnetic plate 16. Above the non-magnetic plate 16 and secured to the upper end of. the permanent magnets 21 by iron screws 22 are the extensions 23 which the permanent magnets 21 into proximity with the armature 25 so as to polarize this armature in-a manner well lmown-in the art. This armature is pivoted between the point 26 and the set screw 27 the spring brass bridge 29. The middle portion of this bridge is-adapted to be moved toward and away from the ends of the magnet poles by means of the set screw 30 which affords a ready adjustmentfor the position of the armature relative to the magnet cores. The tapper arm 31 issecured to the armature and extends outwardly intothe proper posltion to strike the gongs 32 and 33 in the vibration of the tapper. The non-magnetic plate 16 is separated from the main inclos ing'case by the rubber or other sealing ring 34, this plate being securelyv held in position by means of thescrews 35. The bells 32 and 33 are supported by posts 37 and 38 and 9c the adjustment, to secure the proper spacing between bells, is accomplished by drilling the bells slightly eccentric and then rotating them to the proper position.

' Upon opening themain door 5, the receiver 40, transmitter 41, and generator crank 42 are exposed to the partydesiring The receiver is supported upon a pivoted switch-hook 43,- this hook being adapted to control the switch springs 44 by means of the plunger 45, this plunger being fitted closely -through the plate 46 to prevent gases and moisture from entering the interior of tly case. Within A the main case are the battery cells 48, induction coil 49 andgenerator not' shown, these parts being of the usual type and forming no part of my present invention.

The lower 0 carry the magnetism of 70 which are held in 75 The main case 1 is provided with four cars 50 by means of which the telephone may be secured to a support.

It will be seen that with my invention the parts of the telephone which would be damaged by moisture or gases are entirely inclosed so that even though the telephone should become entirely submerged in water it would not be damaged and could be used immediately after the water had subsided below the level'of the door. This becomes of considerable importancein the operation of mine telephones, since it is very important that the telephones should at no time become disordered.

Though I have shown my invention applied to a mine telephone, it is to be under-- by connectors of magnetic material and an.

armature outside the casing polarized by the portion of the permanent magnet extending outside the casing.

2. In a telephone 7 set, the combination with a plate, of an electromagnet and a permanent magnet on one side of said plate and net on th an armature and an extension for said permanent magnet on the other side of said plate, said plate forming a water and gas proof partition between the armature and the electromagnet.

3. In a telephone set, the combination with 'a non-magnetic plate, of a ringercoil having its core extending through said plate, a nut on the end of said core to secure said core and said plate together, a permanent magnet extending from the other end of said core to said plate, a magnetic extension for said permanent magnet on the opposite side of said plate, binders of magnetic material extending through portions of said magnets and said plate, and an armature adapted to be polarized by said permanent magnet. I

4. In a telephone set, the combination with a non-magnetic plate, of a pair of electro-magnets secured to one side of said plate, an armature secured to the other side of said plate in position to be actuated by said electro-magnets, a permanent magnet on the former side of said plate having a portion resting against that side of said plate, an extension for sa1d permanent maglatter side of the plate for polar izing sa1d armature, and magnetic means for securing the extension to said permanent magnet.

Signed by me at Rochester, county of Monroe, and State of New York, in the presence of two witnesses.

CHARLES E. HAGUE. Witnesses H. W. LUoIA, J. H. HOLDEN. 

